Surgical tip.



-c. E. KEILLS.

SURGICAL TIP.

APPucAUoN man mm1. me. l v l Patented Jun@ 20,v 1916.

STATES PATENT il@ i@ r SURGICAL TIP.

To @ZZ whom t may concern Be it known that I, CHARLES EDMUND KELLs, a citizen of the United States, residing in New Orleans, in the parish of Orleans' and State of Louisiana, have invented certain new and useful Improvements in Surgical Tips, of which the following is a specification. V

This invention relates to what are known as tips which are used in surgical operations for aspirating or draining wounds or cavities. Experience has demonstrated that the tips usually employed are extremely irritating to the patients and it often happens that they are closed byv reason of the collapsingof the walls of thecavity in Awhich they are inserted which causes pain and suspends the operation.

According to my invention I provide a tip of such construction that these objections are overcome. Y

My improved tip comprises a sheath or cannula which partially incloses a perforated tube adapted to extend to the inner walls of the cavity and/which incloses another tube through which the fluid is discharged from the cavity. The sheath or cannula is adapted to extend only a short distance into the wound and its inner diameter is greater than the exterior ,diameter of the inner perforated tube, which latter tube is of somewhat greater diameter than the drainage or discharge tube, the arrangement being such that a suction may be maintained through the discharge tube whichin-4 duces air from outside the. wound to enter through the perforated tube and thus prevent the formation of a vacuum in the cavity. The detail of construction will be hereinafter more fully described.

In the accompanying drawing, Figure l is a sectional view of my improved surgical tip and illustrates how it is used. Fig. 2 is a similar view showing how the parts are disposed when the outer sheath or cannula is withdrawn from the Wound. Fig. 3 illustrates a modification.

The inner or drainage tube A is open at its lower end a and at its upper end it is connected to a tube B connected with any'.-

suitable apparatus for producing a partial vacuum or suction. The inner tube A is surrounded by a tube C of somewhat larger diameter and which is provided with perforations 0. This tube has a closed rounded Specification of Letters Patent. Patentedgulle 20,1916. Application mea April 11, 1916.

Serial No. 90,439.

end c and is formed with inlet openings c2 near its lower rounded end. It will be observed that the tube A extends nearly to the bottom of the tube C but terminates just above the openings 02.". The Vtube C is in turn surrounded by a sheath or cannula D which maybe imperforate orv it may be perforated as indicated at d, it is however provided with perforations d outside the wound. y A.

X indicates the cavity into which the tip is inserted and Y indicates the outer surface of the patient. v V

T he cannula D isformed with a laterally projecting flange d? andthe tube C is formed with a flange 03.' Thetube A at its upper end is connectedv with a Vsupport E which may be in the form of a ball resting on the top of the tube C and limiting the downward movement of the tube A in the tube C. When the tip is applied the cannula D is first inserted through the wound and made to project a short distanceinto the cavity X. In order tohold the cannula properly in position cotton orother suitable material F is interposed between the flange cl2 and the surface Y yand the cannula may be held in place by adhesive tape I). When the cannula is Lpositioned the tube C vis inserted in such manner that its lower rounded end c will just barely touch the inner wall of the cavity X, or preferably will be positioned a short distance from the walls `of. the cavity. This position may be regulated and fixed by'means of cotton or other suitable material G interposed between the flanges o3 and Z2 and the tube C may be held in place by adhesive tape P. When the cannula and the tube C are properly positioned the discharge tube A is inserted and'then if the suction apparatus be started fluids will be drawn from the cavity through the opening G2 and through the tube A. At the same time air will be drawn into the cavity from outside the wound between the tubes A and C and will pass out through the openings c, thus preventing the formation of a vacuum in the cavity which would cause its walls to collapse. Air may also enter between the tube C and the cannula D.

The apparatus, constructed in this way, may be used a proper length of time and then as the wound begins to heal the cannula D may be withdrawn and only the tubes A and C employed in the manner indicated in Fig. 2. In this figure the letter m indicates parts of the wound which have healed. Tubes of various sizes may be employed according to the nature of the cavity treated and as the wound further heals smaller tubes may be used in place of those shown in Fig. 2, but of the same general construction.

I have demonstrated by several operations that a tip constructed in the manner before described operates with much better results than those heretofore used. They 'drain the cavities more effectively and with much less pain to the patient.

In Fig. 3 I have shown a modification. The cannula I) is similar to that before described. In this case the tubes A and C are made of rubber or other flexible Vmaterial. The cannula is positioned by cotton or similar material F in the manner indicated. The tube Al is connected with a metal elbow II which may in turn be connected with vacuumproducing apparatus. The tube C is connected with a sleeve I larger' in diameter' than the elbow II leaving a space 1l' for the entrance of air between the tubes A and C. The sleeve I is connected t0 a frame J of suitable construction which supports it. In this case also air may pass by way of the sleeve and beto the cavity X and prevent the walls of the cavity from collapsing. The cannula may be held in place by"a piece of tape L applied to the flange Z2 and to the body of the patient. The tube C may in like manner be held in place by the sleeve I, the frame .I and tape L applied to the fianges y' of the frame J and to the body of the patient.

The tip shown in Fig. 3, it will be observed, embodies some of the characteristics of that shown in Figs. 1 and 2.

@antenas this patent may be obtained for I claim as my invention: y

l. A surgical tip comprising an inner discharge tube, a tube surrounding the discharge tube having an air inlet and having also perforations in it for the passage of air from its interior to the cavity being treated, and a cannula surrounding said tubes.

2. A surgical tip, comprising a tube having a rounded end adapted to enter a cavity and provided with entrance openings near its inner end and provided also with other openings for the passage of air to the cavity, a discharge tube within said first mentioned tube and terminating near the entrance openings thereof, and means for supporting said inner tube in said outer tube.

3. A surgical tip, comprising an inner discharge tube, a surrounding tube of larger diameter having inlet openingsl for the passage of fluid from the cavity to the discharge tube and having also openings for the passage of air from the interior of the tube to the cavity and a cannula surrounding said tubes but separable therefrom.

4.. A surgical tip, comprising an inner discharge tube, a surrounding tube of larger diameter separable from the discharge tube and providedv on its outer end with a flange and having at its inner end inlet openings for permitting fluid to pass from the cavity to the discharge tube and a sheath surrounding the tubes, separable therefrom and having at its outer end a laterally projecting flange.

In testimony whereof, I have hereunto subscribed my name.

C. C. CoLnsoN.

ve cents each, by addressing the Commissioner er Patents.

Washington, D. G." 

